Technology giants are pouring hundreds of billions into data centers and AI infrastructure, marking one of the largest investment waves in market history. Investors, however, are growing cautious as soaring CapEx begins to pressure free cash flow and near-term returns. The key question now is whether this is the foundation of the next long-term tech supercycle or the first warning sign of a deeper valuation reset.

The year 2026 begins with a paradox in the markets. While technology companies are reporting strong revenues and solid operating profits, their stocks have come under pressure in recent weeks. The common denominator is a sharp rise in capital spending. In fact, the biggest tech players are planning to invest in infrastructure, datacenters and AI chips this year in a volume unprecedented in the history of the markets.

Analysts from Goldman Sachs, Morgan Stanley and Bloomberg Intelligence estimate that the largest companies alone could spend up to around $650 billion on CapEx in…